Tyrannosaurus FX: What dinosaurs really sounded like
Twenty Thousand Hertz
Jurassic Park and the T-Rex
In Jurassic Park, the first glimpse of the T-Rex we get is when they pull up to its enclosure in the rain. Julia studies dinosaurs' closest living relatives, the reptiles, to figure out the kinds of sounds they could have made. So carnivorous dinosaurs probably didn't roar while they hunted but predators do roar to scare off threats and competitors.
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